namespace NVelocity.Runtime.Directive
{
	/*
	* The Apache Software License, Version 1.1
	*
	* Copyright (c) 2000-2001 The Apache Software Foundation.  All rights
	* reserved.
	*
	* Redistribution and use in source and binary forms, with or without
	* modification, are permitted provided that the following conditions
	* are met:
	*
	* 1. Redistributions of source code must retain the above copyright
	*    notice, this list of conditions and the following disclaimer.
	*
	* 2. Redistributions in binary form must reproduce the above copyright
	*    notice, this list of conditions and the following disclaimer in
	*    the documentation and/or other materials provided with the
	*    distribution.
	*
	* 3. The end-user documentation included with the redistribution, if
	*    any, must include the following acknowlegement:
	*       "This product includes software developed by the
	*        Apache Software Foundation (http://www.apache.org/)."
	*    Alternately, this acknowlegement may appear in the software itself,
	*    if and wherever such third-party acknowlegements normally appear.
	*
	* 4. The names "The Jakarta Project", "Velocity", and "Apache Software
	*    Foundation" must not be used to endorse or promote products derived
	*    from this software without prior written permission. For written
	*    permission, please contact apache@apache.org.
	*
	* 5. Products derived from this software may not be called "Apache"
	*    nor may "Apache" appear in their names without prior written
	*    permission of the Apache Group.
	*
	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
	* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	* DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
	* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
	* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
	* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
	* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
	* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	* SUCH DAMAGE.
	* ====================================================================
	*
	* This software consists of voluntary contributions made by many
	* individuals on behalf of the Apache Software Foundation.  For more
	* information on the Apache Software Foundation, please see
	* <http://www.apache.org/>.
	*/
	using System;
	using MethodInvocationException = NVelocity.Exception.MethodInvocationException;
	using ParseErrorException = NVelocity.Exception.ParseErrorException;
	using ResourceNotFoundException = NVelocity.Exception.ResourceNotFoundException;
	using InternalContextAdapter = NVelocity.Context.InternalContextAdapter;
	using INode = NVelocity.Runtime.Parser.Node.INode;
	
	/// <summary> Base class for all directives used in Velocity.
	/// *
	/// </summary>
	/// <author> <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
	/// </author>
	/// <version> $Id: Directive.cs,v 1.2 2002/07/30 07:26:50 corts Exp $ 
	/// 
	/// </version>
	public abstract class Directive : DirectiveConstants  //,System.ICloneable
	{
		public abstract System.String Name{get; set;}
		public abstract int Type{get;}
		public virtual int Line
		{
			get
			{
				return line;
			}
			
		}
		public virtual int Column
		{
			get
			{
				return column;
			}
			
		}
		private int line = 0;
		private int column = 0;
		
		protected internal RuntimeServices rsvc = null;
		
		/// <summary>Return the name of this directive 
		/// </summary>
		
		/// <summary>Get the directive type BLOCK/LINE 
		/// </summary>
		
		/// <summary>Allows the template location to be set 
		/// </summary>
		public virtual void  setLocation(int line, int column)
		{
			this.line = line;
			this.column = column;
		}
		
		/// <summary>for log msg purposes 
		/// </summary>
		
		/// <summary>for log msg purposes 
		/// </summary>
		
		/// <summary> How this directive is to be initialized.
		/// </summary>
		public virtual void  init(RuntimeServices rs, InternalContextAdapter context, INode node)
		{
			rsvc = rs;
			
			//        int i, k = node.jjtGetNumChildren();
			
			//for (i = 0; i < k; i++)
			//    node.jjtGetChild(i).init(context, rs);
		}
		
		/// <summary> How this directive is to be rendered 
		/// </summary>
		public abstract bool render(InternalContextAdapter context, System.IO.TextWriter writer, INode node);
	}
}